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<h1 class="entry-title">Child Selector ("parent &gt; child")</h1>
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						所属分类：<span class="category"><a href="/category/selectors/">选择器</a> &gt; <a href="/category/selectors/hierarchy-selectors/">层级</a></span>
<span class="pull-right">英文文档：<a href="https://api.jquery123.com/child-selector/" target="_blank">Child Selector ("parent &gt; child")</a></span>
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<article class="entry selector" id="child1"><h2 class="section-title"><span>child selector</span></h2>
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<p class="desc"><strong>描述: </strong>选择所有指定“parent”元素中指定的"child"的直接子元素。</p>
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<span class="version-details">添加的版本: <a href="/category/version/1.0/">1.0</a></span>jQuery( "parent &gt; child" )</h4>
<p class="argument"><strong>parent: </strong>任何有效的选择器。</p>
<p class="argument"><strong>child: </strong>用来筛选子元素的选择器。</p>
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<p>作为一个CSS选择器，这个子元素组合器被Safari, Firefox, Opera, Chrome, 和 Internet Explorer 7 及以上版本等现代浏览器支持，但尤其不被Internet Explorer6及以下版本支持。然而在jQuery中，这个选择器（与其他所有选择器）能在所有支持的浏览器中工作，包括IE6。</p>
<p>这个子元素组合器(E <strong>&gt;</strong> F)和(E F)都作为后代组合，但是他们有所不同，更具体的是(E <strong>&gt;</strong> F)它只会选择第一级的后代。</p>
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<section class="entry-examples" id="entry-examples"><header><h2 class="underline">例子:</h2></header><div class="entry-example" id="example-0">
<h4><span class="desc">为无序列表 &lt;ul class="topnav"&gt;的所有直接子元素加上边框。</span></h4>
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<div class="line n1">1</div>
<div class="line n2">2</div>
<div class="line n3">3</div>
<div class="line n4">4</div>
<div class="line n5">5</div>
<div class="line n6">6</div>
<div class="line n7">7</div>
<div class="line n8">8</div>
<div class="line n9">9</div>
<div class="line n10">10</div>
<div class="line n11">11</div>
<div class="line n12">12</div>
<div class="line n13">13</div>
<div class="line n14">14</div>
<div class="line n15">15</div>
<div class="line n16">16</div>
<div class="line n17">17</div>
<div class="line n18">18</div>
<div class="line n19">19</div>
<div class="line n20">20</div>
<div class="line n21">21</div>
<div class="line n22">22</div>
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<pre><div class="container"><div class="line"><code><span class="doctype">&lt;!DOCTYPE html&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;<span class="title">html</span>&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;<span class="title">head</span>&gt;</span></code></div></div><div class="container"><div class="line"><code>  <span class="tag">&lt;<span class="title">style</span>&gt;</span><span class="css"></span></code></div></div><div class="container"><div class="line"><code><span class="tag">body</span> <span class="rules">{ <span class="rule"><span class="attribute">font-size</span>:<span class="value"><span class="number">14</span>px;</span></span> <span class="rule">}</span></span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;/<span class="title">style</span>&gt;</span></code></div></div><div class="container"><div class="line"><code>  <span class="tag">&lt;<span class="title">script</span> <span class="attribute">src</span>=<span class="value">"https://code.jquery.com/jquery-latest.js"</span>&gt;</span><span class="javascript"></span><span class="tag">&lt;/<span class="title">script</span>&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;/<span class="title">head</span>&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;<span class="title">body</span>&gt;</span></code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;<span class="title">ul</span> <span class="attribute">class</span>=<span class="value">"topnav"</span>&gt;</span></code></div></div><div class="container"><div class="line"><code>  <span class="tag">&lt;<span class="title">li</span>&gt;</span>Item 1<span class="tag">&lt;/<span class="title">li</span>&gt;</span></code></div></div><div class="container"><div class="line"><code>  <span class="tag">&lt;<span class="title">li</span>&gt;</span>Item 2</code></div></div><div class="container"><div class="line"><code>    <span class="tag">&lt;<span class="title">ul</span>&gt;</span><span class="tag">&lt;<span class="title">li</span>&gt;</span>Nested item 1<span class="tag">&lt;/<span class="title">li</span>&gt;</span><span class="tag">&lt;<span class="title">li</span>&gt;</span>Nested item 2<span class="tag">&lt;/<span class="title">li</span>&gt;</span><span class="tag">&lt;<span class="title">li</span>&gt;</span>Nested item 3<span class="tag">&lt;/<span class="title">li</span>&gt;</span><span class="tag">&lt;/<span class="title">ul</span>&gt;</span></code></div></div><div class="container"><div class="line"><code>  <span class="tag">&lt;/<span class="title">li</span>&gt;</span></code></div></div><div class="container"><div class="line"><code>  <span class="tag">&lt;<span class="title">li</span>&gt;</span>Item 3<span class="tag">&lt;/<span class="title">li</span>&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;/<span class="title">ul</span>&gt;</span></code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;<span class="title">script</span>&gt;</span><span class="javascript">$(<span class="string">"ul.topnav &gt; li"</span>).css(<span class="string">"border"</span>, <span class="string">"3px double red"</span>);</span><span class="tag">&lt;/<span class="title">script</span>&gt;</span></code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;/<span class="title">body</span>&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;/<span class="title">html</span>&gt;</span></code></div></div></pre>
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<h4>Demo:</h4>
<div class="demo code-demo"></div>
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